package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberResponseVo;
import com.atguigu.gulimall.auth.feign.MemberFeign;
import com.atguigu.gulimall.auth.feign.ThirdPartFeign;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * @author ：TJH
 * @date ：Created in 2020/6/25 9:05
 * @description：
 */
@Controller
@Slf4j
public class LoginController {

    @Autowired
    ThirdPartFeign thirdPartFeign;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeign memberFeign;

    /**
     * 短信验证码
     *
     * @param phone
     * @return
     */
    @ResponseBody
    @GetMapping("/sms/sendCode")
    public R sendCode(@RequestParam("phone") String phone) {
        //TODO 1、接口防刷

        String key = AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone;
        String redisCode = redisTemplate.opsForValue().get(key);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - 1 < 600000) {
                //60秒内不能再发
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        String code = UUID.randomUUID().toString().substring(0, 5);
        code = "88888";
        String redisCodeValue = code + "_" + System.currentTimeMillis();

        //2、验证码再次校验 redis 存key-phone value-code sms:code:18578789824->1234
        redisTemplate.opsForValue().set(key, redisCodeValue, 10, TimeUnit.MINUTES);
        String s = redisTemplate.opsForValue().get(key);
        thirdPartFeign.sendCode(phone, code);
        return R.ok();
    }

    /**
     * RedirectAttributes 模拟重定向传递数据
     * <p>
     * //todo 重定向携带数据，利用sssion原理。将数据放入到session中
     *
     * @param userRegistVo
     * @param result
     * @param redirectAttributes
     * @return
     */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo userRegistVo, BindingResult result, RedirectAttributes redirectAttributes) {
        if (result.hasErrors()) {
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(fieldError -> {
                return fieldError.getField();
            }, fieldError -> {
                return fieldError.getDefaultMessage();
            }));
            redirectAttributes.addFlashAttribute("errors", errors);
            //校验出错，转发到注册页面
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //真正注册，调用远程服务进行调用
        //1、校验验证码
        String code = userRegistVo.getCode();
        String key = AuthServerConstant.SMS_CODE_CACHE_PREFIX + userRegistVo.getPhone();

        String s = redisTemplate.opsForValue().get(key);
        if (!StringUtils.isEmpty(s)) {

            if (code.equals(s.split("_")[0])) {
                //删除验证码 令牌机制
                redisTemplate.delete(key);
                //验证码通过
                //调用远程服务
                R regist = memberFeign.regist(userRegistVo);

                if (regist.getCode() == 0) {
                    //注册成功回到登录页
                    return "redirect:http://auth.gulimall.com/login.html";
                } else {
                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg", regist.getData(new TypeReference<String>() {
                    }));
                    redirectAttributes.addFlashAttribute("errors", errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            } else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }
    }

    @PostMapping("login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session) {
        R login = memberFeign.login(vo);
        if (login.getCode() == 0) {
            //成功
            MemberResponseVo data = login.getData("data", new TypeReference<MemberResponseVo>() {
            });
            //放入到session中
            session.setAttribute(AuthServerConstant.LOGIN_USER, data);
            return "redirect:http://gulimall.com";
        } else {
            //失败
            Map<String, String> errors = new HashMap<>();
            errors.put("msg", login.getData("msg", new TypeReference<String>() {
            }));
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }

    @GetMapping("/login.html")
    public String loginPage(HttpSession session) {
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute == null) {
            return "login";
        } else {
            return "redirect:http://gulimall.com";
        }
    }
}
